The U.S. has been testing a bacterial mask made with sewage from India and China, according to Axios.
The test came after reports of cases in India and Beijing, where some cases have been linked to a strain of the coronavirus.
The masks, which are supposed to keep the virus at bay, are available in stores in India for $15 and $25, respectively.
They were produced by a Chinese firm and are not yet available for sale in the United States.
[The Associated Press] [Bloomberg]